My OpinionI just started watching bleach recently. (took me a week to watch all the dubbed episodes lol)
This song is so awesome. I can't believe only one person has even said anything about it.
This song (like several other japanese songs) speaks to you even if you don't understand a word of it. You can just feel the sadness, mixed with a little bit of hope.I have a video of this song, with english subs. After Learning what it says in english, I got an even deeper meaning out of it:

This song seems to be about a girl who has been hurt, though she tries not to show it. She forces herself to smile and pretend nothing is wrong. (your fragile broken wings,you don't have to hide your smiles).It hurts him to hear her voice, and he wishes he could change things. He can't say what he really wants to say. He wishes she would confide in him, but even though she won't talk about it, he still wants to be there for her.Or maybe that's just what I want it to mean, since that prettymuch describes where I am.